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use anyhow::{anyhow, Context};
use futures::future::join_all;
use std::{
path::{Path, PathBuf},
process::Stdio,
};
use tokio::{
fs::File,
io::{AsyncBufReadExt, BufReader},
process::Command,
};
#[derive(Clone)]
pub struct ArticleMeta {
pub title: String,
pub canonical_name: String,
pub date: iso8601::Date,
}
pub async fn article_metadata(path: PathBuf) -> anyhow::Result<ArticleMeta> {
let f = File::open(&path).await.context("article not found")?;
let mut f = BufReader::new(f);
let mut buf = String::new();
f.read_line(&mut buf).await.context("cant read the file")?; // assume the 1st line has the title
Ok(ArticleMeta {
title: String::from(buf[2..].trim()),
canonical_name: path
.file_stem()
.ok_or(anyhow!("no file stem"))?
.to_str()
.ok_or(anyhow!("this file's name is broken"))?
.to_string(),
date: iso8601::date(
&path
.file_name()
.ok_or(anyhow!("file has no name"))?
.to_str()
.ok_or(anyhow!("this file's name is broken"))?[0..10],
)
.map_err(|e| anyhow!("file date wrong: {e}"))?,
})
}
pub async fn get_articles(blog_root: &Path) -> anyhow::Result<Vec<ArticleMeta>> {
let mut a = join_all(
std::fs::read_dir(blog_root)?
.map(|e| e.unwrap())
.map(|e| article_metadata(e.path())),
)
.await
.into_iter()
.collect::<anyhow::Result<Vec<_>>>()?;
a.sort_by_cached_key(|e| -match e.date {
iso8601::Date::YMD { year, month, day } => day as i32 + month as i32 * 100 + year * 10000,
_ => unreachable!(),
});
Ok(a)
}
// TODO use this somewhere
pub async fn file_history(filename: &str) -> String {
String::from_utf8(
Command::new("/usr/bin/git")
.args(&["log", "--follow", "--pretty=tformat:%as %h %s", filename])
.stdout(Stdio::piped())
.output()
.await
.unwrap()
.stdout,
)
.unwrap()
}
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